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List Archive: gentoo-security
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To: gentoo-security@g.o
From: Joe Knall <joe.knall@...>
Subject: Re: mount noexec and ro
Date: Sat, 4 Nov 2006 17:27:39 +0100
On Sat, 2006-11-04 16:00 Paul de Vrieze wrote:
> On Saturday 04 November 2006 12:11, Joe Knall wrote:
> > can/does mounting a partition with noexec, ro etc. provide
> > additional security or are those limitations easy to circumvent?
> >
> > Example: webserver running chrooted
> > all libs and executables (apache, lib, usr ...) on read only
> > mounted partition /srv/www, data dirs (logs, htdocs ...) on
> > partition /srv/www/data mounted with noexec (but rw of course), no
> > cgi needed.
> > Server is started with "chroot /srv/www /apache/bin/httpd -k
> > start".
>
> Besides this, you must also add nodev to prevent those kinds of
> circumventions
>
> Paul

correct, it's atually like this
/srv/www type ext3 (ro,nosuid,nodev,acl,user_xattr)
/srv/www/data type ext3 (rw,noexec,nosuid,acl,user_xattr)

but I need a /dev, currently data/dev with null and urandom there, 
writeable and not nodev (could as well be a separate partition).
Do you think this turns all the rest in vain?

Joe
-- 
gentoo-security@g.o mailing list


Replies:
Re: mount noexec and ro
-- Miguel Sousa Filipe
Re: mount noexec and ro
-- Paul de Vrieze
References:
mount noexec and ro
-- Joe Knall
Re: mount noexec and ro
-- Paul de Vrieze
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Updated Jun 17, 2009

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